凿壁透光 záobìtòuguāng to study diligently Origin Definitions Defs Strokes Stroke Words Sentences Sents 凿 鑿 záo verb to chisel to chisel; to bore a hole; to dig or excavate壁 bì noun wall wall; partition透光 tòuguāng to let light through (of a material or object) to allow light to pass through